September weather forecast and climate
Monte Sete, Portugal

Weather in September

The first month of the autumn, September, is also a moderately hot month in Monte Sete, Portugal, with average temperature varying between 16.3°C (61.3°F) and 29.4°C (84.9°F).

Temperature

In Monte Sete, the average high-temperature marginally drops, from a hot 33.3°C (91.9°F) in August, to a warm 29.4°C (84.9°F). In Monte Sete, in September, the average low-temperature is 16.3°C (61.3°F).

Heat index

In September, the average heat index is estimated at 29.9°C (85.8°F). Constant exposure and activity lead to possible fatigue. Prolonged exercise may result in heat cramps.
Take into consideration that the heat index values are calculated for shade and light wind conditions. Exposure to direct sunshine can increase heat index values by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel', 'apparent temperature', 'feels like', or 'felt air temperature', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. This effect is individual, with diverse people perceiving weather differently for numerous reasons (clothing, wind, pregnancy), and activity. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.

Humidity

In Monte Sete, the average relative humidity in September is 48%.

Rainfall

In Monte Sete, it is raining for 4.8 days, with typically 8mm (0.31") of accumulated precipitation. In Monte Sete, during the entire year, the rain falls for 78.7 days and collects up to 219mm (8.62") of precipitation.

Snowfall

In Monte Sete snow does not fall in April through December.

Daylight

In Monte Sete, the average length of the day is 12.4h.

Sunshine

In Monte Sete, the average sunshine is 9.5h.

UV index

The average daily maximum UV index in Monte Sete is 6. A UV Index of 6 to 7 symbolizes a high threat to health from the exposure to the Sun's UV radiation for average individuals.
Note: In September, the average maximum UV index of 6 translate into the following recommendations:
Take precautions and utilize sun safety practices. Protection against the skin and eye damage is required. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
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FAQ

What is the temperature in September in Monte Sete?

In Monte Sete, in September, the average high-temperature is 29.4°C (84.9°F), and the average low-temperature is 16.3°C (61.3°F). In September, the average heat index (a.k.a. 'real feel', 'felt air temperature'), that combines both air temperature and relative humidity, is evaluated at 29.9°C (85.8°F).

What is the average humidity in September in Monte Sete?

In September, the average relative humidity in Monte Sete is 48%.

How much does it rain in Monte Sete in September?

In Monte Sete, Portugal, during September, the rain falls for 4.8 days and regularly aggregates up to 8mm (0.31") of precipitation.

When it does not snow in Monte Sete?

In Monte Sete snow does not fall in April through December.

What is the average length of the day in September in Monte Sete?

In September, the average length of the day in Monte Sete, Portugal, is 12.4h.

How long on average sun shines in September in Monte Sete?

The average sunshine in September in Monte Sete is 9.5h.

What is the UV index intensity in September in Monte Sete?

In Monte Sete, Portugal, the average daily maximum UV index in September is 6. A UV Index of 6 to 7 symbolizes a high hazard to health from the exposure to the Sun's UV radiation.

Average temperature in September
Monte Sete, Portugal

Average temperature in September - Monte Sete, Portugal
  • Average high temperature in September: 29.4°C

The warmest month (with the highest average high temperature) is August (33.3°C).
The month with the lowest average high temperature is January (11.9°C).

  • Average low temperature in September: 16.3°C

The month with the highest average low temperature is August (17.7°C).
The coldest month (with the lowest average low temperature) is January (4.2°C).

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Average pressure in September
Monte Sete, Portugal

Average pressure in September - Monte Sete, Portugal
  • Average pressure in September: 1016.3mbar

The month with the highest atmospheric pressure is December (1023mbar).
The month with the lowest atmospheric pressure is April (1015.2mbar).

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Average wind speed in September
Monte Sete, Portugal

Average wind speed in September - Monte Sete, Portugal
  • Average wind speed in September: 8.4km/h

The windiest month (with the highest average wind speed) is February (12.1km/h).
The calmest month (with the lowest average wind speed) is September (8.4km/h).

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Average humidity in September
Monte Sete, Portugal

Average humidity in September - Monte Sete, Portugal
  • Average humidity in September: 48%

The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is August (43%).

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Average rainfall in September
Monte Sete, Portugal

Average rainfall in September - Monte Sete, Portugal
  • Average rainfall in September: 8mm

The wettest month (with the highest rainfall) is November (39mm).
The driest month (with the least rainfall) is July (3mm).

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Average rainfall days in September
Monte Sete, Portugal

Average rainfall days in September - Monte Sete, Portugal
  • Average rainfall days in September: 4.8 days

The month with the highest number of rainy days is April (11.7 days).
The month with the least rainy days is July (1.7 days).

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Average snowfall in September
Monte Sete, Portugal

Average snowfall in September - Monte Sete, Portugal
  • Average snowfall in September: 0mm

The month with the highest snowfall is February (5mm).
Months with the least snowfall are April, May, June, July, August, September, October, November and December (0mm).

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Average snowfall days in September
Monte Sete, Portugal

Average snowfall days in September - Monte Sete, Portugal
  • Average snowfall days in September: 0 days

The month with the highest number of snowfall days is February (0.4 days).
Months with the least snowfall days are April, May, June, July, August, September, October, November and December (0 days).

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Average daylight in September /
Average sunshine in September
Monte Sete, Portugal

Average daylight in September / Average sunshine in September - Monte Sete, Portugal
  • Average daylight in September: 12.4h

The month with the longest days is June (Average daylight: 14.9h).
The month with the shortest days is December (Average daylight: 9.5h).

  • Average sunshine in September: 9.5h

Months with the most sunshine are July and August (Average sunshine: 11.8h).
The month with the least sunshine is January (Average sunshine: 5.1h).

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Average sunshine days in September
Monte Sete, Portugal

Average sunshine days in September - Monte Sete, Portugal
  • Average sunshine days in September: 24 days

The month with the most sunshine days is July (28.7 days).
The month with the least sunshine days is April (16.6 days).

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Average UV index in September
Monte Sete, Portugal

Average UV index in September - Monte Sete, Portugal
  • Average UV index in September: 6

The month with the highest UV index is August (UV index 7).
Months with the lowest UV index are January, February, March, November and December (UV index 3).

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Average cloud cover in September
Monte Sete, Portugal

Average cloud cover in September - Monte Sete, Portugal
  • Average cloud cover in September: 16

The month with the most cloud cover is January (Cloud cover 42).
Months with the least cloud cover are July and August (Cloud cover 8).

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Average visibility in September
Monte Sete, Portugal

Average visibility in September - Monte Sete, Portugal
  • Average visibility in September: 10km

Months with the highest visibility are June, July, August and September (10km).
The month with the lowest visibility is January (8km).

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